Abrasive tool



E. KLEINHAMPLE.

ABRASIVE TOOL.

APPLICATION FILED NOV-4.19m.

1 ,32 1,759. v Patented Nov. 11, 1919.

r 'fl FIT-5-1 @2- @Zig 3' IIHHI r gum/M d WOT 4.4 Q43 ym imam as EDWARD KLEINI-IAMPLE, or MiI-LVALE, PENNSYLVANIA.

ABRASIVE TOOL;

Specification of Letters Patent.

Patented Nov. 11, 1915).

Application filed November 4,1918. Serial No. 261,038.

1' b all whom it may concern:

Be it known that I EDWARD I{LEII{HAMPLE, a citizen of the United States residing at Millvale, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Abrasive Tools, of which the following is a specification.

This invention relates to an abrasive tool and more particularly to a tool for shaping crank pins and has for its primary object to provide a device of this character of simple substantial construction capable of reducing the time necessary in filing a crank pin into .its proper shape. 1

An object of the invention is to provide a tool capable of a plurality of adjustments for compensating for any irregularities of the surface of a crank pin.

Another object of the invention is to pro vide a tool that may be readily adjusted to meet all requirements.

'With these and other objects in view the invention will be better understood from the following detailed description taken in connection with the accompanying drawing wherein;

Figure l is a top plan view of the tool shown in applied position.

Fig. 2 is a side elevation thereof.

Fig. 3 is a vertical sectional view.

Fig. 1 is a detailed sectional view through the lower bar.

Fig. 5 is a plan view of the abrasive ele ment.

Again referring to the drawing illustrating one form which my invention may assume the numerals 1 and 2 designate respectively an upper and a lower bar, but at this point I wish to call attention to the fact that the members 1 and 2 can have a plurality of other shapes than shown, the draw.- ing illustrating my invention in its simplest form. The bars are adjustably supported with relation to each other by screws 3, each of which having a non-threaded engagement with one bar and a threaded engagement with the other bar.

Adjustably mounted upon the lower bar 2 by means of bolts 1 arranged in slots 5 formed in the bar 2 are abutments 6 shown in this particular instance, two in number, for engagement with opposite sides of an object such as a crank pin 7 as illustrated in the drawing. Thus it will be seen that owing to the engagement of the abutments 6 and bar 2 with the pin 7 j my device will be properly associated with the pin 7. The

abrasive element 8 is in the form of a plate having one side provided with cutters 9 and attached to the bar 1 by screws 10. At this point I wish to call attention to the fact that the abrasive element 8 may be of any shape and if found advisable to have both surfaces roughened to a different degree. By having the element 8 detachably sup ported I may substitute other elements of different abrasive qualities. As far as I have proceeded it will be seen that the abrasive element 8 will be effectively held against the pin 7 during the cutting operation but for the purpose of effectively locking the bars against accidental displacement and to vary the relation of the cutting face of the element 8 to the pin 7, I provide two pairs of screws 11 and 12, each pair being adjustably related with a series of threaded openings 13. The openings 13 are provided to allow for adjustment of the abutments 6. It will be seen that upon tightening up the screws 11 and 12 pressure will be exerted and tend to separate the bars which will cause a binding action between the bars and screws 3 thereby locking'the same against accidental displacement. The outer surface of the crank pin 7 may be irregular to an extent that it is absolutely necessary to raise one end portion of the cutter above the other end portion and this may be accomplished by varying the adjustment of the screws of each pair thus tilting the bar 1 at an angle with relation to the bar 2 and therefore the cutting element 8 with relation to pin 7. It may be advisable in practice to restrict the surface in contact between the pin 7 and bar 2 and for this purpose I have illustrated a track 14 in the form of a piece of wire detachably engaging openings in the bar 2 so that the same may be renewed when worn out.

To complete the invention I provide a handle 15 detachably engaging the bar 2 and attention is called to the fact that the handle 15 may be removed and the device rotated by applying pressure to either of the bars 1 and 2; From the foregoing description taken in connection with the ac companying drawing it should be apparent that I provide a device of simple substantial construction capable of rough usage without sacrificing the accuracy thereof and besides different size crank pins and irregular surfaces may be readily accommodated.

It is of course to be understood that the device may be constructed in various other shapes than illustrated, therefore I do not desire to be limited in any manner except as set forth in the claims hereunto appended.

Having described my invention, What I claim is f bars, members for ad ustmg the relatlon of he bars,imeans for locking the bars in adjusted position and an abrasive element carried by one of the bars, said means i11- cluding an abutment mounted for adjustment with relation to the object to be worked 7 upon.

3. An abrasive tool comprising a pair of bars, screws for ad usting'the bars relative to each other, abutments adjustably carrled by one of the bars, an abrasive tool supported by the other barjscrews mounted in one of the bars and engaging the abutments for accomplishing a final adjustment be tween the bars and a handle secured to one of the bars.

l. An abrasive tool comprising'a pair of bars, screw elements for supporting and adjusting the relative position of said bars, an abrasive tool carried by one of the bars, and devices for changing the angular position of that bar supporting the tool.

5. In a tool of the character described, a pair of bars, an abrasive element carried by one of the bars, means for forcing the bars towardeaoh other so as to hold the abrasive element in engagement with an object to be operated upon and a pair of abutment members projecting inwardly from the other bar and adjustable longitudinally thereof toward and away from each other for engaging about the opposite sides of the object.

Tn testimony whereof I affix my signature.

EDWARD KLEINHAMPLE.

Copies of this patentvmay be obtainedfor five cents each, by addressing the Commissioner of Patents,

' Washington, D. G. 

